Question

How do you solve `38+7k=8(k+4)`?

Answer 1

k = 6

Explanation:

Multiply out the bracket on the right hand side.

`38 + 7k = 8k + 32`

Recall that we can do anything we like to the equation, as long as we do the same to both sides. Simplifying the equation immediately spits out the solution.

`38 + 7k color(red)(-32) color(red)(-7k) = 8k + 32 color(red)(-32) color(red)(-7k)`

`color(blue)(6) = color(blue)(k)`